"We are very casual in the way we approach things," Jürgen Klinsmann, manager of the U.S. National team, said. "Their families can come pretty much any time, they will be at the games, they can come to the hotel and we can have barbecues together. I think every nation is different."

While he was one of the best players in the world, Klinsmann had some experience being on lockdown -- and apparently didn't enjoy it.

"I played in different countries where you didn't see your girlfriend or your wife for two months," Klinsmann said. "That was more the Italian background when I played in Italy. Every team and every country handles that differently based on their culture."